{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-25-234041","form_type":"8-K","ticker":"CNR","cik":"0001710366","company_name":"Core Natural Resources, Inc.","filed_at":"2025-10-08T23:59:59+00:00","discovered_at":"2026-05-14T18:02:40.229542+00:00","generated_at":"2026-05-17T04:19:34.770685+00:00","sec_items":["5.02","7.01","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.65,"confidence":"high","headline":"Core Natural Resources appoints board chair Jimmy Brock as CEO; Paul Lang departs","bullets":["James A. Brock appointed CEO effective October 6, 2025, succeeding Paul A. Lang.","Paul A. Lang separated as CEO and resigned from board; will provide transition consulting through Dec 31, 2025.","Lang to receive lump sum cash of $7,950,553 plus benefits and RSU settlements per separation agreement.","Brock previously executive chair since Jan 2025; prior CEO of CONSOL Energy before merger with Arch Resources."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-25-234041","json":"https://secwatch.observer/filing/0001193125-25-234041.json","markdown":"https://secwatch.observer/filing/0001193125-25-234041.md","text":"https://secwatch.observer/filing/0001193125-25-234041.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1710366/000119312525234041/0001193125-25-234041-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1710366/000119312525234041/d66172d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T04:19:34.770685+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}